Description: This is Korea's first math-essay comic designed to boost thinking skills and comprehension — abilities that are increasingly considered essential for college entrance exams. Thinking skills can be broken down into expression, creativity, and logical reasoning, all of which are cultivated through 'essay writing' training. Math Thief weaves mathematical concepts into an exciting story combined with essay-style reasoning, helping readers naturally understand math principles and concepts while building the ability to solve math problems. The series also revisits the math content covered in each comic chapter on dedicated content pages, allowing readers to review and solidify concepts and principles for greater learning impact. In addition, simple 'Bau's O/X Quiz' segments are included within the comic to make reviewing related math topics fun and engaging. Chapter 85: The Underground City Chapter 86: The Flea Market Chapter 87: Please, Just Poop! Chapter 88: The Terrifying Subway Station Chapter 89: Zombies Don't Eat Kimchi! Chapter 90: The Terra Town Library!